11780812400 has 60 divisors (see below), whose sum is σ = 32346752592. Its totient is φ = 4039134720.

The previous prime is 11780812339. The next prime is 11780812471. The reversal of 11780812400 is 421808711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2100917 + ... + 2106516.

Almost surely, 2^11780812400 is an apocalyptic number.

11780812400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11780812400 is an abundant number, since it is smaller than the sum of its proper divisors (20565940192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11780812400 is a wasteful number, since it uses less digits than its factorization.

11780812400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207458 (or 4207447 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The spelling of 11780812400 in words is "eleven billion, seven hundred eighty million, eight hundred twelve thousand, four hundred".